Sophisticated Electronic Component Applications Start Here

Magnetic Metals' cores are at the heart of today's most advanced technologies. From initial design through production, we have the engineering and the technical expertise to provide the highest quality magnetic components that meet the most stringent specifications and application requirements.

GFCI Assemblies for

Wiring Devices

Magnetic Metals is the largest producer of high-quality GFCI sensor cores in the industry. We also have the expertise and capacity to supply the largest volume orders that our customers require.

For more than 40 years, we have been making cores and components for wiring devices used in ground fault circuit interrupters for high-current residential and industrial applications, including charging stations for electric cars. Our components are also employed in arc fault and leakage detectors.

As a full-service, one-stop provider, we supply nickel-iron – among other state-of-art materials – and a full spectrum of services, including coating, slitting, stamping, winding, annealing, and custom assembly. Our AS9100C-certified facilities in Anaheim and Camden offer technical support, design review and testing from initial concept through production. They also accommodate standard and custom fabrications of any quantity and ensure that our products fulfill the performance needs and expectations of current and future wiring devices.

For additional information and immediate assistance with your requirements, designs and applications, please call 800-257-8174 or email This email address is being protected from spambots. You need JavaScript enabled to view it..

Value-Added Services

Magnetic Metals can produce prototypes for testing and evaluation, initiate limited production, or scale up to a full production run. We can meet the largest volume tape wound toroidal core orders in the industry. Manufacturing capabilities include:

GFCI and ALCI Transformer Coil Assemblies

High-speed magnetic wire winding

Automatic pin insertion

Full-service contract manufacturing, from inception to final product assembly, packaging, shipping and distribution

Namlite® coating for improved isolation between core windings for optimal high frequency performance